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Archives of Orthopaedic and Trauma Surgery

, Volume 136, Issue 2, pp 249–255 | Cite as

MRI-associated classification to evaluate the outcome after autologous reconstruction of the medial patellofemoral ligament: a preliminary study

  • R. Best
  • S. Hingelbaum
  • J. Huth
  • F. Mauch
Arthroscopy and Sports Medicine

Abstract

Purpose

Purpose of this study was to establish and validate an MRI-associated classification to graduate postoperative results of MPFL reconstructions.

Methods

30 autologous MPFL reconstructions of 28 patients were evaluated by two independent raters using MRI. All grafts were assigned to a novel graduation system respecting the graft’s anchoring insertions, its MRI signal appearance, continuity and tension and the differentiation relating to the surrounding soft tissue.

Results

All grafts could reliably be assigned to one of the subgroups by both raters. 86.6 % of the grafts could be classified A1 or B1, reflecting a correct positioning and a low to intermediate signal intensity. Only one graft had to be classified C3 (malpositioned, elongated).

Conclusion

We were able to establish and validate an MRI-associated classification to graduate the postoperative outcome after MPFL reconstructions. Foresighted, the presented classification might support further decision making in case of unsatisfying postoperative results.

Keywords

MPFL reconstructions MRI classification Postoperative outcome Signal appearance Tunnel positioning 

Notes

Compliance with ethical standards

Conflict of interest

None.

Funding

None.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of Orthopaedic Sports MedicineUniversity of TuebingenTuebingenGermany
  2. 2.Department of OrthopaedicsDiakonie Klinikum Schwäbisch HallSchwäbisch HallGermany
  3. 3.Department of OrthopaedicsSportklinik Stuttgart GmbHStuttgartGermany

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